Mss and options length

Hello, I thought that by disabling certain options that i dont need like window scaling, i could increase the mss i am advertising to the peer, but this doesnt seem the case when looking at the first SYN header : The mss always fixed at 1460. Is there some clear explanation on mtu, mss and their relationship with the header length? Also is the size of the tcp payload received from the peer related to its mss? I am confused looking at the trace of wireshark as the payload i receive is less than 1260 bytes which is the peer mss Thank you for any clarification